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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-10292) Generate JobGraph in StandaloneJobClusterEntrypoint only once
Date Tue, 02 Oct 2018 13:40:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-10292?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16635492#comment-16635492
] 

ASF GitHub Bot commented on FLINK-10292:
----------------------------------------

zentol commented on a change in pull request #6786: [FLINK-10292][rest] Separate REST and
Dispatcher RPC thread pools
URL: https://github.com/apache/flink/pull/6786#discussion_r221954095
 
 

 ##########
 File path: flink-runtime/src/main/java/org/apache/flink/runtime/webmonitor/WebMonitorEndpoint.java
 ##########
 @@ -180,7 +183,7 @@ public WebMonitorEndpoint(
 		this.restConfiguration = Preconditions.checkNotNull(restConfiguration);
 		this.resourceManagerRetriever = Preconditions.checkNotNull(resourceManagerRetriever);
 		this.transientBlobService = Preconditions.checkNotNull(transientBlobService);
-		this.executor = Preconditions.checkNotNull(executor);
+		this.executor = Executors.newFixedThreadPool(endpointConfiguration.getNumThreads(), new
ExecutorThreadFactory("Flink-" + getClass().getSimpleName()));
 
 Review comment:
   Given that no test was making use of that feature I'd be inclined to keep the PR as is.
If all our tests so far could be implemented without using this feature, what test could possibly
require it?

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> Generate JobGraph in StandaloneJobClusterEntrypoint only once
> -------------------------------------------------------------
>
>                 Key: FLINK-10292
>                 URL: https://issues.apache.org/jira/browse/FLINK-10292
>             Project: Flink
>          Issue Type: Improvement
>          Components: Distributed Coordination
>    Affects Versions: 1.6.0, 1.7.0
>            Reporter: Till Rohrmann
>            Assignee: vinoyang
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.7.0, 1.6.2
>
>
> Currently the {{StandaloneJobClusterEntrypoint}} generates the {{JobGraph}} from the
given user code every time it starts/is restarted. This can be problematic if the the {{JobGraph}}
generation has side effects. Therefore, it would be better to generate the {{JobGraph}} only
once and store it in HA storage instead from where to retrieve.



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